Really? I thought it did. When your tone pot is at 10, you still have your pickup connected to the ground via the full pot resistance (which is 250K in my case) in series with your cap, right? But I guess with 250K not much current bleeds through...

Try it for yourself, but I just don't think it's significant/audible. Like you say, there's very little current. The pot and cap are still in the circuit, and taking them out completely (no-load pots, for example) will get you a small bump in treble, but just the cap value? Doubt there's anything there.

again, not really on 10. the material of capacitor may have a very minute effect on tone. value is probably bigger. i went from a 0.22 to a 0.1 and it greatly altered the taper and tone of the pot when rolling off. even at 0, the guitar is still "playably bright" no mudd. when popping out my out of phase switch and that enabled, my guitar sounds like a half cocked wah.

Do you have access to a decent recording setup? By which I mean something better than the mic on your webcam? If so record them then play them back. I'm sure a lot of guys here would be interested in hearing the differences if you put it all in a youtube video or something.